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Structural and antireflective characteristics of catalyst-free GaN nanostructures on GaN/sapphire template for solar cell applications
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10.1063/1.3386538
/content/aip/journal/apl/96/15/10.1063/1.3386538
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/15/10.1063/1.3386538
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

SEM micrographs of (a) GaN/sapphire template, (b) GaN film at , (c) roughen GaN layer at , (d) GaN columns at , (e) GaN nanorods at , and (f) roughen GaN layer at . The inset in the (e) shows the GaN nanorods in the top view.

Image of FIG. 2.
FIG. 2.

Cross-sectional HRTEM images of the GaN nanorods on the GaN template. The insets show the magnified HRTEM images.

Image of FIG. 3.
FIG. 3.

PL spectra of the GaN template and the GaN nanorods at 10 K.

Image of FIG. 4.
FIG. 4.

Cross-sectional SEM images and the estimated effective refractive index profiles along the vertical direction for (a) GaN film, (b) GaN columns, and (c) GaN nanorods.

Image of FIG. 5.
FIG. 5.

(a) Measured reflectance spectra of GaN film, GaN columns, roughed GaN layer , and GaN nanorods at normal incidence, and (b) measured reflectance spectra of the GaN nanorods at different incident angles. The inset of (b) shows the values for the various GaN structures.

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/content/aip/journal/apl/96/15/10.1063/1.3386538
2010-04-14
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Structural and antireflective characteristics of catalyst-free GaN nanostructures on GaN/sapphire template for solar cell applications
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/15/10.1063/1.3386538
10.1063/1.3386538
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